685063 has 2 divisors, whose sum is σ = 685064. Its totient is φ = 685062.

The previous prime is 685057. The next prime is 685073. The reversal of 685063 is 360586.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 685063 - 2⁵ = 685031 is a prime.

It is a super-2 number, since 2×685063² = 938622627938, which contains 22 as substring.

685063 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (685073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 342531 + 342532.

It is an arithmetic number, because the mean of its divisors is an integer number (342532).

2⁶⁸⁵⁰⁶³ is an apocalyptic number.

685063 is a deficient number, since it is larger than the sum of its proper divisors (1).

685063 is an equidigital number, since it uses as much as digits as its factorization.

685063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 685063 is about 827.6853266792. The cubic root of 685063 is about 88.1543005698.

Subtracting from 685063 its sum of digits (28), we obtain a triangular number (685035 = T₁₁₇₀).

The spelling of 685063 in words is "six hundred eighty-five thousand, sixty-three".